’s annual CIO50 list, which reveals the most influential and innovative tech chiefs in the UK across all industries and organisations – as judged by their CIO peers – will be unveiled on 9 June.

The list, now it its fourth year, is compiled from the votes of UK CIOs voting on the performance of their peers over the last twelve months, taking into account their leadership ability, delivery and execution record, innovation and influence.

The full list of 50 CIOs – and the CIO who has been voted number one – will be revealed on 9 June at an exclusive networking reception in London. editor Steve Ranger said: “The CIO50 list is unique in that it is created by CIOs for CIOs. This year we’ve had a record number of CIO voting and more CIOs nominated than ever before.”

Catherine Doran

Catherine Doran, director of corporate development at Network Rail, was the top CIO in the CIO50 2009 list
(Photo credit: Chris Beaumont/CBS Interactive

While you’re waiting for this year’s list to be unveiled, you can check out 2009’s CIO50 list, as well as the lists from both 2008 and 2007.